As for sorting out the nature of supported formats, I think
we would all be well served to ignore the nature of those
formats entirely in the normative text in favor of describing
their behavior only. If we confined all mention of inf-sup or
mid-rad to informative notes & confined our normative text to
making restrictions on how they shall behave, it would be a
better standard for it.
That's not a bad approach now that I think about it.
Let's consider that as a principle in the writing of this
standard.